How much play should there be in a sure grip back and forth?

You can't take the end yoke and turn it and know if you have to much or to little and use that as any reliable way to gauge anything.

When you turn the end yoke it takes up the .006 to .010 or more BL and then the clearance in the spiders, and then the side gears and the pin and the axles in the side gears and then the tire moves.
How could you make any determination on your BL with all that involved.

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